diff --git a/tests/test_rocksdb_options.rs b/tests/test_rocksdb_options.rs
index 24c71b3..9429a6a 100644
--- a/tests/test_rocksdb_options.rs
+++ b/tests/test_rocksdb_options.rs
@@ -25,6 +25,6 @@ fn test_set_num_levels() {
         let mut opts = Options::default();
         opts.create_if_missing(true);
         opts.set_num_levels(2);
-        let _db = DB::open(&opts, n).unwrap();
+        let _db = DB::open(&opts, &n).unwrap();
     }
 }